Organic Consumers Association
6101 Cliff Estate Rd
Little Marais, MN 55614
218-226-4164
218-226-4157 (fax)(email)
When they were known as the Pure Food Campaign, OCA has probably done more work fighting BGH than any other group.

Food & Water, Inc.
RR #1, Box 68 D
Marshfield, VT 05873
1-800-EAT SAFE
802-563-3300; 802-426-3700
802-426-3711 (fax)
FWI puts out a GREAT newsletter on food safety issues. If you're not a member... if you want to follow such issues, I recommend it...) They aren't as technical, but are focused more on the campaigning end of things.